Climate 411

An Urgent Call to Climate Action in the IPCC Synthesis Report

Photo: IPCC

It was released two days late for Halloween, but an international report on the dangers of climate change still has plenty of information about our warming planet that will chill you to the core.

The report is the latest from the Intergovernmental Panel on Climate Change (IPCC).

The IPCC releases a series of reports every six or seven years that assess the latest data and research on climate change. This latest is the Fifth Assessment Synthesis Report—a culmination of three earlier reports in this series.

The Synthesis Report summarizes the physical science of climate change; current and future impacts, vulnerabilities, and adaptation of the human and natural worlds; and mitigation opportunities and necessities.

More than anything else, the report underscores the urgent need for action.

Here are 13 details from the report that illustrate why:

1.  “Warming of the climate is unequivocal… The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, and sea level has risen.”

2.  Changes in climate have impacted all continents and the oceans.

3. The period from 1983 to 2012 was likely the warmest 30-year period of the last 1400 years in the Northern Hemisphere.
Glaciers have continued to shrink almost worldwide. Northern Hemisphere spring snow cover has continued to decrease.

4. Permafrost temperatures have increased in most regions since the early 1980s. Arctic sea-ice has decreased in every season and in every successive decade since 1979.

5. From 1901 to 2010, global mean sea level rose by more than half a foot. The rate of sea-level rise since the mid-19th century has been larger than the mean rate during the previous two millennia.

6. In the future, it is virtually certain that there will be more frequent hot and fewer cold temperature extremes in most areas, on both daily and seasonal timescales. It is very likely that heat waves will occur more often and last longer. The oceans will continue to warm and acidify, and global mean sea level to rise.

7. A large fraction of species face increased extinction risk due to climate change during and beyond the 21st century. Most plant species cannot naturally shift their geographical ranges sufficiently fast to keep up with climate change.

8. Climate change puts humanity at risk from heat stress, storms and extreme precipitation, inland and coastal flooding, landslides, air pollution, drought, water scarcity, sea-level rise, and storm surges. Climate change is projected to undermine food security.

9. “Human influence on the climate system is clear.” Atmospheric concentrations of carbon dioxide, methane and nitrous oxide are unprecedented in at least the last 800,000 years.

10. Continued emission of greenhouse gases will cause further warming and long-lasting changes in all components of the climate system, increasing the likelihood of severe, pervasive and irreversible impacts for people and ecosystems.

11. It is virtually certain that global mean sea-level rise will continue for many centuries beyond 2100, with the amount of rise dependent on future emissions.

12. Many adaptation and mitigation options can help address climate change, but no single option is sufficient by itself. Adaptation can reduce the risks of climate change impacts, but there are limits to its effectiveness.

13. Substantial emissions reductions of greenhouse gases – including carbon dioxide and methane — over the next few decades can reduce climate risks in the 21st century and beyond, increase prospects for effective adaptation, reduce the costs and challenges of mitigation in the longer term, and contribute to climate-resilient pathways for sustainable development.

According to the IPCC Synthesis Report, planet Earth is in pretty dire shape – but the report isn’t hopeless.

Imagine our planet as a patient at a doctor’s office. It’s too late to just stay healthy – we’ve already caught a cold. But we can prevent the cold from deteriorating into pneumonia.

In order to do that, though, we need to act now. We need people, and governments, across the world to join together to reduce greenhouse gas emissions, support adaptation efforts, and help reduce the damages from climate change.

Also posted in Basic Science of Global Warming, Extreme Weather, Greenhouse Gas Emissions, News, Policy, Science / Read 1 Response

‘Feeding 9 billion’ requires facing up to climate change

This post was co-authored by Kritee, Senior Scientist, International Climate; Richie Ahuja, Regional Director, Asia; and Tal Lee Anderman, Tom Graff Fellow – India Low-Carbon Rural Development

National Geographic’s May cover story, “Feeding 9 billion,” offers valuable insights into how to feed a growing global population while reducing agriculture’s environmental impacts. But it omits some key connections with a critical issue: climate change.

Drought in the U.S. causes withering of corn. (Photo credit: Ben Fertig, IAN, UMCES)

As the Food and Agriculture Organization recently documented in great detail, climate change is likely to fundamentally alter the structure of food systems around the globe. With about 43% of the world’s population employed in agriculture, it’s vital that farmers have the knowledge and tools they need both to adapt to climate change and to help mitigate it.

Author Jonathan Foley, who directs the University of Minnesota’s Institute on the Environment, lays out several steps for “Feeding 9 billion.” Though he starts by acknowledging that agriculture emits “more greenhouse gases than all our cars, trucks, trains, and airplanes combined,” he doesn’t explicitly mention how his plan relates to a changing climate.

The first of his steps – halting conversion of additional forests and grasslands to agriculture – is crucial to stopping climate change, given the vast quantities of greenhouse gases released in these conversions. As the latest Intergovernmental Panel on Climate Change (IPCC) report on mitigation noted, protecting forests and increasing carbon content of the soils can decrease global emissions by as much as 13 gigatons CO2eq/year by 2030 – more than a quarter of current annual global emissions.

Foley also highlights the need to reduce meat consumption, because only a very limited portion of calories consumed by animals yield edible food for humans, and to reduce food waste. According to the IPCC, these consumer-level steps have the potential to decease agricultural emissions by 60% below the current trajectory. While Foley didn’t acknowledge these mitigation potentials, we agree that these are important steps to feeding the world’s population and protecting our environment.

But it’s his steps calling for improving productivity – both by growing more food on existing farms, and by using fertilizer, water and energy more efficiently – where the interactions with climate are more complex and need special attention.

Climate adaptation and resilience in agriculture

Foley rightly points out that to feed the world’s future population, more food needs to grow on existing farms. However, he doesn’t note that some of the effects of climate change – droughts, floods and heat waves in many parts of the world – are already reducing crop yields, and these effects and their consequences are expected to worsen.

The IPCC’s recently published 5th Assessment Report on adaptation concludes that:

  • Climate change is already negatively affecting yields of crops and abundance of fish, and shifting the regions where crops grow and fish live
  • Future changes in climate will increase competitiveness of weeds, making it difficult and more expensive to control them
  • By 2050, changes in temperature and precipitation alone will raise global food prices by as much as 84% above food prices projected without these two climatic factors
  • Major grains like wheat, corn, and rice could see as much as a 40% decrease in yield from a 20C increase in local temperatures. That’s because of the changing rainfall frequency and intensity, unpredictability and irregularity of growing seasons, and higher ozone levels that often accompany high CO­2 levels

To deal with these consequences and ensure food security and livelihoods, adaptation to climate change is essential. Indeed, adopting carefully chosen adaptation and resilience measures could improve crop yields as much as 15-20%. The IPCC recommendations include:

  • Altering planting/harvesting dates to match the shifting growing seasons
  • Using seed varieties that might be more tolerant of changing climatic patterns
  • Better managing water and fertilizer use

A farmer training session, led by EDF’s partner NGO in India (Photo credit: Accion Fraterna)

Achieving high yields requires enabling farmers all over the world to adapt, build and restore the resilience of agricultural ecosystems in the face of continued climate change. Given that many farmers in developed countries have already reached what are currently maximum possible yields, it’s particularly urgent to work with farmers in the developing world.A vast majority of these farmers in developing countries own small-scale farms (less than two acres in size) and have limited resources, and as a result are on the frontline of experiencing the unfolding impacts of climate change. These farmers are already growing the majority of the world’s food – more than 90% of the world’s rice, over 65% of its wheat and 55% of its corn. Notably, as opposed to our recommendations for farmers in the developed countries, some of them might need to increase their fertilizer use to achieve better yields as opposed to decreasing it. Feeding a world of 9 billion thus requires facing the disproportionate effect that climate change has on the 2 billion people who depend on small-scale farms for their livelihood.

Barriers to climate adaptation & mitigation in agriculture

The latest IPCC report also noted that the “nature” of the agriculture sector means:

“There are many barriers to implementation of available mitigation options, including accessibility to … financing, … institutional, ecological, technological development, diffusion and transfer barriers.”

We couldn’t agree more.

Many farmers, especially small scale land-owners in developing parts of the world, lack access to reliable scientific information and technology. In some cases, relevant information has not even been generated.

An Indian peanut farm where EDF is monitoring yield and greenhouse gas emissions. (Photo credit: Richie Ahuja)

For example, small-scale rice farmers in Asia lack access to information enabling them to determine what amounts of water, organic and synthetic fertilizer will optimize yields while also minimizing release of the greenhouse gases methane (which is 84 times more potent than carbon dioxide in the first 20 years after it is released), and nitrous oxide (which is nearly 300 times more potent than carbon dioxide). EDF is working with the Fair Climate Network in India and with Can Tho University and other partners in Vietnam to help generate that information and facilitate its use by farmers.

More generally, agricultural institutions at all levels – international, regional, national and local – need to work closely with farmers to learn and promote evidence-based, locally appropriate agricultural adaptation and mitigation technologies and practices. Farmer access to finance can further help improve the adoption rate of these technologies. Larger investments in farming infrastructure and science from government and private sector also need to be channeled to promote food security through low-carbon farming.

Our food system cannot achieve high yields without building and restoring the resilience of agricultural ecosystems, and the system won’t be sustainable if agriculture doesn’t do its part to mitigate climate change.

To feed 9 billion people, we must overcome barriers to reducing climate change’s effects on agriculture, and agriculture’s effect on climate.

This post first appeared on EDF Talks Global Climate blog

Also posted in Plants & Animals, Policy, Science / Read 2 Responses

Top takeaways from the latest IPCC report

(This post originally appeared on EDF Voices)

Yesterday, the United Nations’ Intergovernmental Panel on Climate Change (IPCC) released its last report in a three-part series that makes up the fifth assessment report (AR5) on the latest data and research on climate change. The reports have been issued approximately every five years since 1990.

This latest round of reports began in September 2013 with anupdate on the latest science behind climate change (known as Working Group I). Last month, the second report was released and discussed climate change impacts, adaptation, and vulnerability already observed and projected in the future (known as Working Group II).

The new report released yesterday (known as Working Group III) discusses actions to limit the magnitude and rate of climate change, termed mitigation. Over 400 experts from over 50 countries were involved in the development of the report, which was accepted by representatives from 195 nations.

Here are 5 key findings from the new lPCC report:

1. Global emissions of heat-trapping gases from human activities have continued to rise. Emissions are dominated by carbon dioxide (mainly from fossil fuel combustion and industrial processes), which account for 78% of total greenhouse gas emissions from 1970 to 2010 (when other gas emissions are weighted to incorporate warming capability relative to CO2). Greenhouse gas emissions have grown more rapidly between 2000 and 2010 than in previous decades despite a recent push to limit emissions; economic and population growth are driving these increases and continue to outgrow emission savings from energy improvements.

2. Action to limit the magnitude and rate of climate change is needed immediately. Climate conditions are changing rapidly as shown in Working Group I, and the impacts to society and ecosystems are unequivocal, consequential, and increasing as shown in Working Group II. Scenarios to limit warming to 2ºC (3.6ºF) relative to preindustrial levels require drastic cuts in greenhouse gas emissions by mid-century through large-scale changes in energy systems and land-use practices. The longer we delay action, the more expensive it will be.

3. It is key to reduce energy demand, deploy low-carbon technologies, and better conserve and manage forestry and agriculture. There is a range of technological and behavioral options for sustainable climate actions; nearly one thousand scenarios were analyzed in the report.

  • Near-term reductions in energy demand through efficiency enhancements in transport, buildings, and industry sectors are cost-effective, provide flexibility for decarbonizing in the energy supply sector, reduce risks in energy supply, and prevent future lock-in to carbon-intensive infrastructures.
  • Behavioral and lifestyle changes—such as lower energy use in households, buying longer-lasting products, changing dietary habits, and reducing food waste—can considerably lower greenhouse gas emissions alongside technological and structural changes. Further development and implementation of low-carbon energy and/or carbon removal technologies is important.
  • Renewable energy technologies—such as wind, hydro, and solar power—have finally achieved a level of maturity to enable large-scale deployment. However, steep challenges exist, including varying costs, regional circumstances, and the existing background energy system.
  • The best climate actions for forestry include afforestation, sustainable forest management, and reducing deforestation. For agriculture, best practices include cropland and grazing land management, and restoration of organic soil. Sustainable agriculture practices can also promote resilience to climate change impacts.

4. Effective actions will only be achieved by international cooperation. Climate change is a global problem because most heat-trapping gases accumulate over time and mix globally. Therefore, emissions by an individual, community, company, or country, affect the globe. The number of institutions for international cooperation is increasing, and sharing knowledge and technologies with other nations speeds up finding solutions. The issue is complicated by the fact that different countries’ past and future contributions to atmospheric greenhouse gas levels are different, as is their capacities to implement actions to limit climate change and build resilience.

5. Co-benefits strengthen the basis for undertaking climate action. Measures to limit energy demand (efficiency, conservation, and behavioral changes) and renewable alternatives can reduce the risk of energy supply, improve public health and the environment by limiting pollution, induce local and sectoral employment gains, support good business practices, improve security of energy supply at the national level, and eradicate poverty. Adverse side effects, such as reduced revenue from coal and oil exporters, can be to a certain extent avoided by the development of carbon capture and storage technologies.

The IPCC will conclude the AR5 in October 2014 with a final report that summarizes the three-part series, recapping the major findings of the physical science of climate change, its effects on society and ecosystems, and actions to avert catastrophic climate change.

There are many ways YOU can help promote climate actions, such as supporting the U.S. to continue its emission-reducing efforts like the EPA’s power plant standards.

Also posted in Greenhouse Gas Emissions, News, Policy, Science / Read 1 Response

UN talks produce a strong agreement on forest protection, but otherwise déjà vu

This post originally appeared on EDF’s Climate Talks blog. 

Around midnight on Friday, November 25 – several hours after the annual UN climate conference was scheduled to have ended – I stood in the hallway of a temporary conference center erected on the soccer pitch of the National Stadium in Warsaw, watching the scrum of the climate talks in their final hours.

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Nat Keohane is EDF’s Vice President for International Climate and a former economic adviser to the Obama administration.

NGO representatives were pitching stories and sharing intelligence with reporters, negotiators were huddling in groups or dashing off to last-minute bilateral meetings, and everyone was scrounging for coffee or late-night sandwiches to power another all-nighter.

The talks appeared on the brink of failure as countries deadlocked over the core questions of which countries should be obligated to reduce emissions and who should pay for it. In the end, as nearly always happens, an agreement was reached and the talks didn’t fall apart. That has become a typical pattern at these annual UN talks.

If the scene was familiar, the headlines that came out of the talks were familiar as well: Developing Nations Stage Protest at Climate Talks (NY Times); UN presses rich nations to act on climate funds (FT); Modest deal breaks deadlock at UN climate talks (AP); UN talks limp towards global 2015 climate deal (Reuters); Climate Finance Battle Shows Expectation Gap at UN Talks (Bloomberg).

But despite the dulling sense of déjà vu that Friday night in Warsaw, there was already reason for celebration. That’s because earlier that same evening – in a break with past years – the Conference of the Parties (or COP, as the talks are formally labeled) had already held the first part of its closing plenary to formally adopt decisions on areas in which negotiators could agree.

During that session, the COP agreed on a comprehensive agreement on Reducing Emissions from Deforestation and forest Degradation (REDD+) – leading to what the UN, countries, media outlets and NGOs all identified as a bright spot in the negotiations.

Forest protection remains a crucial part of the climate action toolkit

With deforestation responsible for about 15% of the world’s manmade greenhouse gas emissions – that’s more than all the cars and trucks in the world – we can’t solve climate change without saving our forests. REDD+ creates economic incentives to reward countries and jurisdictions that reduce emissions from deforestation and degradation below rigorously defined baselines.

The Warsaw Framework for REDD+ Action, as it’s formally known, sets down deep roots for REDD+, and sends a clear signal that it will continue to be a crucial tool for protecting forests and the people who depend on them, by:

  1. ensuring a rigorous, transparent framework for measuring emissions reductions from reduced deforestation;
  2. affirming that financial flows will be “results-based,” meaning that REDD+ compensation will be tied to demonstrated results; and
  3. creating a structure for forest nations to share views on the effectiveness of REDD+ implementation.

The REDD+ outcome was a “big step forward,” my colleague and EDF REDD+ expert Chris Meyer told E&E News, explaining:

We had a foundation for the house; now we have the walls, the plumbing, the electricity and the roof for REDD+.

On the issue of forest protection, at least, the UN talks did exactly what they are supposed to do: they reaffirmed work that had been done in previous years, built upon it in negotiating sessions held over the past twelve months, and made the final push to resolve key issues of disagreement in the two weeks of talks in Warsaw.

This comprehensive package of decisions provides a structure for countries to develop REDD+ programs at a national level, and take advantage of the approximately $700 million per year already pledged for REDD+ program preparation and to pilot results-based payments.

The REDD+ agreement also opens a path for the International Civil Aviation Organization and other bodies that are considering developing market-based mechanisms, whether multi-lateral, national or regional, to bring REDD+ into their systems with an imprimatur of a multilateral standard.

Beyond REDD+, little formal progress

Outside of REDD+, the talks were notable more for what didn’t happen than what did. The talks didn’t make significant progress, although they managed not to collapse.

With two years until a new agreement is supposed to be reached in Paris, countries didn’t set a clear template for what they need to announce in terms of emissions reductions targets, or when they need to announce the targets. Nor did they make much progress on the key issue of climate finance – although surprisingly constructive talks on the difficult issue of compensating the world’s most vulnerable countries for the impacts of climate change reached a compromise agreement to create the Warsaw International Mechanism on Loss and Damage to address the issue going forward.

On two important but lower-profile issues, there appeared to be signs of common ground behind closed doors – but these didn’t translate into movement in the formal negotiations.

On the issue of agriculture, useful conversations occurred that could help integrate agriculture into a more holistic discussion of the role of the land sector in responding to climate change, even if no formal progress were made in the context of these negotiations.

On the critical question of how to construct an international climate architecture that promotes and supports ambitious national action through carbon markets, countries put some useful options on the table – but could not reach a decision, instead deferring further discussion until next June.

To be sure, we never expected much to happen at these Warsaw talks. They were always going to be more about headaches than headlines.

But it’s hard to escape the sense that countries spent two weeks reopening issues that we thought had been resolved and fighting the same battles that have been fought before, only to make a last-minute lunge in the final hours to finish barely ahead of where they started.

A good example is on the key question of participation. Since the 1992 UN Framework Convention on Climate Change, which listed the world’s advanced economies in an appendix or “annex,” the distinction between “Annex I” and “Non-Annex I” countries has been a central point of contention. Five years later, the Kyoto Protocol assigned emissions reductions only to “Annex I” countries. Eliminating the so-called “Kyoto firewall” has been a red line of the U.S. and other advanced economies, which point to the rapid growth in major emerging economies such as China and India, and the concomitant rise in their greenhouse gas emissions.

In 2011, at the UN talks in Durban, South Africa, countries declared that a new agreement, to be finalized in Paris in 2015, would be “applicable to all Parties” – a phrase widely understood to mean that the Annex I/Non-Annex I distinction would be erased. But the first draft of the negotiating text in Warsaw hardly referred to Durban and instead used the different term “broad participation.” That opening salvo didn’t last, and the final text reaffirmed the Durban agreement – but not before significant energy had gone into re-fighting that battle.

The world outside the UN talks

With little to show for their two weeks of long days and all-nighters, negotiators have left themselves a lot to do over the next two years to reach a meaningful outcome in Paris.

However, countries and other actors don’t need to wait for an international agreement in 2015 to start addressing climate change. It was clear, through events on the sidelines of the negotiations and conversations with other attendees at the conference, that cities, states, countries and regions around the world have already started moving to cut their emissions and adapt to climate change.

Some of the most interesting side events highlighted the progress made in China on provincial carbon trading pilots and explored how the Chinese experiments could learn from California’s experience in building a successful carbon market. And the Climate and Clean Air Coalition – a group of more than 70 state and nonstate partners working together to reduce short-lived super-pollutants like methane, black carbon, and HFCs – also announced important progress. Those side events were a reminder that the UN talks, while they remain important, are not the only game in town.

That’s a good thing, and a reason for optimism. Because with the damaging impacts of climate change already apparent in the United States and around the world, the world urgently needs near-term action to turn the corner on global emissions and put us on a downward trajectory toward climate safety.

Also read EDF’s press release on the outcome of the Warsaw negotiations: Strong agreement to protect forests highlight of UN climate talks.

Also posted in News, Policy / Comments are closed

Correcting the maths of the “50 to 1 Project”

A nine-minute video, released earlier this fall, argues that climate mitigation is 50 times more expensive than adaptation. The claims are based on calculations done by Christopher Monckton. We analyzed the accompanying “sources and maths” document. In short, the author shows a disconcerting lack of understanding of climate science and economics:

  1. Fundamental misunderstanding of basic climate science: Pre-industrial levels of carbon dioxide (CO2) were at around 280 parts per million (ppm).[i] One of the most commonly stated climate policy goals is to keep concentrations below 450 ppm CO2. Monckton, oddly, adds 280 and 450 to get to 730 ppm as the goal of global stabilization efforts, making all the rest of his calculations wildly inaccurate.
  2. Prematurely cutting off analysis after ten years: Monckton calculates the benefits of the carbon tax over a ten-year time horizon. That is much too short to see the full effects of global warming or of the policy itself. Elevated carbon levels persist for hundreds to thousands of years.[ii]
  3. Erroneously applying Australian “cost-effectiveness” calculation to the world: This may be the most troubling aspect from an economist’s point of view. Monckton first calculates the effect of the Australia-only tax on global temperatures, which is unsurprisingly low, as Australia accounts for only 1.2% of world emissions. Next, he calculates the tax’s resulting “cost-effectiveness” — defined as the Australian tax influencing global temperatures. No surprise once again, that influence is there, but Australia alone can’t solve global warming for the rest of us. Then, Monckton takes the Australia-only number and scales it to mitigate 1ºC globally, resulting in a purported cost of “$3.2 quadrillion,” which he claims is the overall global “mitigation cost-effectiveness.” But this number simply represents the cost of avoiding 1ºC of warming by acting in Australia alone. Monckton has re-discovered the fact that global warming is a global problem! The correct calculation for a globally applied tax would be to calculate cost-effectiveness on a global level first. If Australia’s carbon price were to be applied globally, it would cut much more pollution at a much lower cost. And that, of course, is very much the hope. Australia, California, and the European Union are called “climate leaders” for a reason. Others must follow.

What’s the real cost of cutting carbon? The U.S. government’s estimate of the cost of one ton of CO2 pollution released today is about $40.[iii] That’s also the optimal price to make sure that each of us is paying for our own climate damages. Any policy with a lower (implied) carbon price—including the Australian tax—easily passes a benefit-cost test.

With all due respect Lord Monckton, 3rd Viscount of Brenchley, your maths are way off.


[i] “Summary for Policymakers,” IPCC Fifth Assessment Report, Working Group I (2013).

[ii] Results differ across scenarios, but a rough rule of thumb suggests that approximately 70% of the ‘peak enhancement level’ over the preindustrial level of 280 ppm perseveres after 100 years of zero emissions, while approximately 40% of the ‘peak enhancement level’ over the preindustrial level of 280 ppm persevered after 1,000 years of zero emissions (Solomon, Susan, Gian-Kasper Plattner, Reto Knutti and Pierre Friedlingstein, “Irreversible climate change due to carbon dioxide emissionsProceedings of the National Academy of Sciences 106, no. 6 (2009): 1704-1709). Note that this refers to the net increase in carbon dioxide in the atmosphere, not the exact molecule. Archer, David, Michael Eby, Victor Brovkin, Andy Ridgwell, Long Cao, Uwe Mikolajewicz, Ken Caldeira et al. “Atmospheric lifetime of fossil fuel carbon dioxide.” Annual Review of Earth and Planetary Sciences 37 (2009): 117-134 discusses these two often confused definitions for carbon’s ‘lifetime,’ and concludes that 20-40% of excess carbon levels remain hundreds to thousands of years (“2-20 centuries”) after it is emitted. Each carbon dioxide molecule has a lifetime of anywhere between 50 to 200 years, according to the U.S. Environmental Protection Agency’s “Overview of Greenhouse Gases: Carbon Dioxide Emissions.” The precise number is under considerable scientific dispute and surprisingly poorly understood. (Inman, Mason, “Carbon is forever,” Nature Reports Climate Change 20 November 2008)

[iii] The precise value presented in Table 1 of the Technical Update of the Social Cost of Carbon for Regulatory Impact Analysis Under Executive Order 12866 for a ton of carbon dioxide emitted in 2015, using a 3% social discount rate increased is $38. For 2020, the number is $43; for 2030, the number increases to $52. All values are in inflation-adjusted 2007 dollars. For a further exploration of this topic, see Nordhaus, William D. The Climate Casino: Risk, Uncertainty, and Economics for a Warming World. Yale University Press (2013) as only one of the latest examples summarizing this kind of analysis. Nordhaus concludes that the optimal policy, one that maximizes net benefits to the planet, would spend about 3% of global GDP.

Many thanks to Michelle Ho for excellent research assistance.

Also posted in Basic Science of Global Warming, Economics / Comments are closed

Protecting the Planet: A Report from the International Conference on Mercury in Edinburgh

(EDF’s Mandy Warner co-wrote this post)

This week, experts in science, policy, and industry are meeting in Edinburgh, Scotland at the International Conference on Mercury as a Global Pollutant (ICMGP).

We are honored to join them to discuss international mercury science and policy, and to share EDF’s work on mercury.

The ICMGP has been held periodically for more than 18 years. It has become the pre-eminent international forum for formal presentation and discussion of scientific advances concerning mercury, and gathers between 700 and 1200 experts for the five-day conference and exhibition.

This year’s conference will be of particular importance, because this year will launch the United Nations Environment Programme (UNEP) Global Legally Binding Treaty on Mercury — which can provide much-needed global action on mercury.

This year, UNEP has also released its new report, Global Mercury Assessment 2013 – Sources, Emissions, Releases and Environmental Transport.

So this year’s meeting is perfectly timed to celebrate the release of the report AND the launch of the international treaty — and most important, to discuss how to put the treaty into practice. It will be a great opportunity for policymakers and scientists to collaborate on solutions that address worldwide mercury emissions.

It is well-known that mercury is an extremely toxic metal.

Mercury primarily exists in three chemical forms in nature: elemental mercury, oxidized mercury and methylmercury.

Methylmercury is the most neurotoxic substance that builds up collects in our aquatic foodchains.

About 400,000 children are born in the U.S. each year with so much mercury in their blood that healthy brain development is threatened.

As they grow, these children’s capacity to see, hear, move, feel, learn and respond is compromised.

While some forms of mercury are deposited near the emissions source, other forms — such as gaseous mercury — are stable in the atmosphere for approximately a year. Gaseous mercury can be deposited far from its source, even thousands of miles away – which is why it has global impacts.

The U.S. is leading the way to reduce mercury emissions from a variety of sources, including coal-fired power plants — the largest remaining source of mercury in America.

The Mercury and Air Toxics Standards for power plants are in place thanks in part to strong support from EDF members, and from our partners in the environmental, health, faith, environmental justice, and business communities.

Power companies are working now to meet emission standards by spring 2015, by installing American-made technology.

EDF has helped advance mercury policy at the state and national level in the U.S. over the past several decades.

During the development of the recently finalized Mercury and Air Toxics Standards, we provided technical comments and testimony; worked with EPA, states, companies; collaborated with both Republicans and Democrats in Congress to defend protective standards; and worked through the courts to advance strong mercury standards.

Our partner organizations like Moms Clean Air Force have helped engage diverse voices from across America, and bring new constituencies to the forefront of the national policy discussion on air pollution and toxics.

We now have the privilege of highlighting the U.S. experience reducing mercury and advancing technology solutions in the power sector to this important international scientific and policy forum.

We hope to forge new partnerships to advance an international solution to mercury pollution that can protect the health not only of Americans, but people across the globe.

Also posted in Health, Policy, Science / Comments are closed